Observations Of A Food Blob (11)

Have you ever noticed (if you haven't already), that whenever there is a marathon or walkathon or cross country run or some other event that requires the participants to be either walking or running or whatever on the road, the roads along the route are not closed to traffic? Isn't this dangerous not only to the participants but also to the other road users? Accidents.......and fights........ can happen, you know. What's even worse is, some event organisers do not even engage the help of traffic police. Participants are left to do their own thing along the route.........meaning they will take up the whole width of the road with scant regards to vehicles coming and going on the road. They seem to think they owned the road during the event. Don't they value their life and limbs? Why are the event organisers so irresponsible?